Question about Televison & Video
Yes you are absolutely right on the overheating problem.as the tv is working fine but stops after sometime when the capacitor gets overheated.and again tv start working properly when the capacitor gets cooled.as if the capacitor is faulty the tv will not stat at all.but as its working for some time that means the capacitor is either got loose from the circuit board or its got weak,so after overheating the capacitor is not able to handle the current passing through it.as the tv shuts down after overheating ,its quite clear that its power problem.so the capacitor is located on the power supply board.you will just have to dry solder on whole board and check out first .if its working properly after dry solder that means it is a loose capacitor problem.but if its not solving the problem after dry solder the capacitor has to be replaced.you will have to check out each capacitor on the power supply board.either the capacitor will be leaked at its top or got slightly burned or bulged from its top side.the capacitors on the board has to be checked .this will help you.you cabn get replacement capacitors at www.radioshack.com. thanks.please do rate the solution.thank you for using fixya.keep updated.
Posted on May 27, 2009
That is not overheating.
This is a regular CRT, and not a rear projection TV , it has no fan, no thermal sensor, and no heating problems of this kind.
The problems occurr because of an internal fault, usually due to a faulty capacitor. The TV restarts after a while just because capacitors discharge the electricity that they are holding after this time.
This kind of problem is usually due to a fault either on power supply board or on flyback converter.
Both parts must be tested before replacement.
A first tist can be done visually inspecting the board , looking for bulged or leaking capacitors, cold solder joints, blown components and burnt areas.
If nothing is seen at a glance , the power board first , and then the flyback converter and mainboard must be tested.
Your TV capacitors will hold charge for a while, even when power cord is unplugged, and can release a dangerous high voltage discharge. Do not service the TV by yourself unless you have previous experience in repairing TVs.
If you want to buy parts or the service manual for this model, contact one of the sellers below:
Encompass Parts Distribution
electronics parts & more from PartStore.com
Do not forget to leave feedback.
Posted on May 23, 2009
Sounds like your Startup Relay is intermittent. Contacts are closing (tv on) then dropping out (tv off). Worn or burned contacts do not make a good connection when they close and start to burn and overheat causing the contacts to open. When they cool down they may make contact again for a very short period. You need to replace the Start up relay.
I hope this helps and thank you for using FixYa!
Posted on May 23, 2009
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Posted on Jan 02, 2017
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